Ball and roller bearing.



I F. STA'RIN. BALL AND ROtLER BEARING.

APPLICATION FILED OCT. 31. I916.

. 1,241,29, Patented Sept. 25, 1917.

35 166 Z 5 9 3 sugars-satin 1. r30 5 $5 24 64 N INVEf/TUB' A ro/ rs WITNESSES F.' STARIN.

BALL AND ROLLER BEA'RINGQ APPLICATION mzu not. a1. 1916. 1

1,241,296. PatentdSept. 25,1917.

3 SHEETS-SHEET 2.

WITNESSES L WEN-Ton" 44 I 3 fimwwmn s'ra'rs N FlQ FRANK'STARIN, OF SPRINGFIELD, MASSACHUSETTS.

BALL AND ROLLER BEARING.

Application filed October 31, 1916. Serial No. 128,661.

To all whom it may concern: Be it known that I, FRANK STARIN, a subject of the Emperor of Austria, and a resident of Springfield, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Ball and Roller Bearings, of which the following is a full, clear, and exact description.

The invention relates to ball bearings, such as shown and described in the application for Letters Patent of the United States, No. 72,260 and No. 93,886, filed by me on January 15, 1916, and April 27, 1916, re spectively.

The object of the invention is to provide certain new and useful improvements in ball and roller bearings whereby the inner and outer rings can be securely held in the chucks to permit accurate finishing or grinding of the faces of the bearing rings, that is, finishing three faces of each ring while held in one position in the chuck and finishing the fourth face while held in another position in the chuck.

In order to accomplish the desired result, the inner and outer rings are provided with coacting races for the reception of bearing balls or rollers, and each ring is provided with a reentrant seat adapted to be engaged by correspondingly shaped gripping members of the jaws of a chuck. I

A practical embodiment of the invention is representedin the accompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal central section of a pair of inner and outer ball bearing rings heldin chucks for grinding or turn' Figs. 2 and 3 are similar views of modified forms of the same;

Figs. 4 and 5 [are similar views of modified forms of outer and inner ball bearing rings and the chucks for holding the same;

Figs. 6 and 7 are similar views of another modified form of the inner and outer ball bearing rings and the chucks for holding the same,

Figs. 8 and 9 are similar views of a pair of outer and inner roller bearing rings held in chucks for grinding or turning; and

Figs. 10 and '11 are similar views of a modified form of a pair ofouter and inner roller bearing rings and the chucks for holding the same.

Ball and roller bearings as now generally constructed consist of an outer ring and an inner ring, the rings having coacting races in which travel balls or rollers usually mounted in a cage so as to hold the balls or rollers in position one relative to the other. Heretofore in finishing the outer and inner bearing rings it was necessary to grind each ring four times in a chuck or similar holding device in order to enable the workman to grind or turn the four faces of the ring in a suitable grinding machine or in a lathe. By this mode of. procedure considerable time is wasted and highly skilled labor is required. By the improvement presently described in detail, each ring can be finished on three faces while held in its chuck, and it is only necessary to change the ring once in the chuck to finish the fourth face.

The inner and outer ball bearing rings 10 and 11 shown in Fig. 1, are adapted to be held in chucks 12 and 13 or similar holding means, to permit of turning or grinding the four faces of each ring in a suitable lathe or grinding machine. The inner ball bearing'ring 10 is provided with two ball races laand 15 spaced apart'and by a straight face 16, and adjacent the outer ends of the ball races 14 and 15 are formed reentrant conical seats 17 and 18 adapted to be engaged by correspondingly shaped reentrant conical gripping members 19 formed on the free ends of spring jaws 20 of the chuck 13 provided with the usual compression member 21 to close the jaws with a view to firmly engage the gripping members 19' with either the seat 18 or 17 It will be noticed that when thejaw 13 engages the seat 18 then the inner and outer faces of the bearing ringlO as well as the side opposite the one engaged by the chuck can be turned or ground in a lathe or grinding'machine, and when'this operation has been finished it is only necessary to open the chuck with a view to. release the ring 10 and to allow of reengaging the ring with the chuck at the seat 17. The other side of the ring 10 can now be finished the same as the other faces.

The outer ball bearing ring 11,-shown in Fig. 1, is preferably made in two parts 25 and 26 connected with eachother at their adjacent inner sides by a locking ring 27,

preferably V-shaped in cross section as shown. The outer ball bearing ring 11 is provided. with the ball races 28 and 29 and with conical reentrant seats 30, 31 and 32, 33 adjacent the sides of the ball races 28 and 29. The reentrant seats 30, 32 .and 31, 33 are adapted to be engaged by gripping members 34 formed on the jaws 35 of the chuck 12 so that either section 25 or 26 can be held in the'chuck 12 while grinding or finishing the same, first at three faces and then at the fourth face in the same manner as above described relative to the inner ring 10. 1

In the form shown in Fig. 2,.the inner and outer ball bearing. rings 40 and. 41 are provided: with coacting ball races 42, 43, and in the sides of the ring 40 are formed. annular dovetail-shaped grooves forming reentrant conical seats 44 and 45 adapted to be engaged by the gripping members46 formed on the jaws 47 of a chuck 48 similar to the chuck 13. j The outer sides of the outer ball bearing ring 41 are provided with similar grooves of dovetail shape to provide regrooves which form reentrant seats 64 and.

entrant conical seats49 and 50 adapted to be engaged'by the correspondingly shaped gripping; members 51 formed on the jaws 52 of the chuck 53, similar to the chuck 12. It is understood-that when the ring 40-is held in the chuck 48, as shown in Fig. 2, then the inner and outer faces as well as the outerside can-be finlshed 1n one operatlon, after w-lnch the rlng 1s dlsengaged. from the chuck 48 and reengaged with the-same from the seat 44 to permit of finishing the other side of the ring. The outer ball bearing ring 41 is finished in the same manner, thatis, on three faces while being. held in the chuck- 53, to bethen reversed in the chuck for finishing thefourth face.

The inner and outer ball bearing, rings 60 v and 61 shown in Fig. 3 are provided with coacting ball races 62 and 63, and, adjacent the sides of the race 62'are arranged annular 65 adapted to be engaged by the correspondingly shaped gripping members 66 of the jaws 67 of a chuck similar to the chucks 13 and 48- above described. The outer ball bearing ring 61 is provided in the adjacent sides of the ball race, 63 with annular grooves forming reentrant seats 68 and 69 adapted to be'engaged by the correspond ingly shaped gripping members 70 formed on the jaws 71 of a chuck similar to the chuck 12' or 53. It is understood that each of the rings 60 and 61 whenin one position on the corresponding'chucks can be finished at three faces after which the fourth face is finished by reversingthe ring in, the chuck, as-above described in-reference to the ball bearing. rings shown in Figs. 1 and 2.

The outer and inner ball bearing rings '80 and 81 shown in Figs. 4 and 5 are provided with coacting ball races 82, 83,- and the outer seats 84 and 85 of segmental shape and adapted to be engaged by correspondingly shaped gripping members86 formed on the jaws 87 of a suitable chuck such as shown at 12 and 53, in Figs. 1 and 2. The inner ball bearing ring 81 is provided adjacent the sides of the ball race 83 with reentrant segmental seats 88 and 89 adapted to be engaged by the gripping members 90 of jaws 91 of a chuck such as shown at 13 and 48 in Figs. 1' and 2. The rings'80 and 81 when held in the chucksin the position shown in Figs. 4 and 5 can be finished at three faces and when this has been done the rings can be reversedly placed in the chucks for finishing the fourth face in the same manner as. above described in reference to the rings shown in Fig. 1. The reentrant seats 85 and 88 of the ball bearing rin s 80 and 81 form annular shoulders with .the sides of:

the ball races 82 and 83, but this construction maybe varied as shown, for instance, in Figs. 6 and 1, in which the outer and inner ball: bearing rings 100 and 101 are provided with coacting ball races 102 and 103, adjacent the sides of which. are formedreentrant segmental seats 104, 105 and 106, 107 without providing shoulders such as shown in 110 formed on the jaws 11 of a chuck such as shown at 13 and 48 in Figs. 1 and 2.. It will be noticed that this inner bearing ring 101 is first ground on three faces while held in the chuck and then subsequently onthe fourth face in the same manner asabovedescribed in reference to theother rings. 1

The outer and inner roller bearing rings 120 and 121 shown in Figs. 8 and 9 are provided with coacting roller V-shaped races 122 and 123, and the outer roller bearing ring 120 is made in two parts, alike in construction, so that it sufiices to describe but one in detail. The outerside of a roller bearing ring 120.is provided adjacent the roller race 121 with a rentrant conical seat 124 adapted to be engaged by correspondingly shaped gripping members 125 formed on the jaws 126 of a chuck similar to the chuck 12 shown in Fig.1. The innerroller bearing ring 121 is provided at the sides ,adj acent'the roller races 123- with reent'rant conical seats 127 either of which isadapted" to be engaged-by gripping members v128 formed on thejaws 120 of a chuck similar tothe chuck 13 shown inFig. 1. i

In the modified form of a.- .roller bearing shown in Figs. 10 and 11, the outer and inner rings 130 and 131 are providedwith straight cylindrical races 132 and 133, and the sides of the outer ring 130 are provided adjacent the races 132 with rentrant conical seats 134 either one of which is adapted to be engaged by correspondingly shaped gripping members 135 of jaws 136 of a chuck similar to the chuck 12. The sides of the inner ring 131 are provided adjacent the race 133 with rentrant conical seats 137 either of which is adapted to be engaged by correspondingly shaped gripping members 138 of jaws 139 of a chuck similar to the chuck 12.

From the foregoing it will be seen that by the arrangement described the inner and outer ball or roller bearing rings can be readily finished without loss of time and without requiring highly skilled labor.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In the art of grinding bearing rings, the combination of a bearing ring having an annular race and having a rentrant annular seat, and a chuck having gripping members shaped to correspond to the said seat to hold the ring on one face and to permit finishing the other three faces.

2. In the art of grinding a bearing ring,

the combination of a bearing ring having an annular race and having a rentrant annular seat on each side of the said race and forming with the adjacent side of the ring an annular shoulder, and a chuck having resilient gripping members shaped to correspond to the said shoulder and gripping the same to permit finishing the ring on three faces while being held at one face in the gripping members of the chuck.

3. In the art of grinding bearing rings,

the combination of a bearing ring having an annular race and having a rentrant annular seat, and a chuck having gripping members shaped to correspond to the said seat and coacting therewith to hold the ring and permit finishing the said annular race, the annular face opposite the said race and the outer facewhile the ring is held in the chuck.

4:. In the art of grinding bearing rings, the combination of a bearing ring having an annular race and having a reentrant annular seat on each side of the said race and forming with the adjacent side of the ring an annular shoulder, and a chuck having resilient gripping members shaped to correspond to the said shoulders and gripping one of the same at a time to permit of finishing the said ball race, the annular face opposite the said ball race and the side adjacent the other non-gripped shoulder while the ring is held in the chuck.

FRANK STARIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). C. 

